Accession Number : AD0423667

Title :   INHIBITION OF FLAME REACTIONS.

Descriptive Note : Rept. for 1 July 61-30 June 63,

Corporate Author : LOUVAIN UNIV (BELGIUM)

Personal Author(s) : Tiggelen,A. Van

Report Date : OCT 1963

Pagination or Media Count : 62

Abstract : The study of flame inhibition by dispersed solid particles was made in a constant flow system. Solid particles act both by a cooling effect and by a more specific surface destruction of the free radicals which propagate the chain reaction. A theoretical formula is proposed which allows the calculation of the necessary amount of powder which extinguishes the flame. Very good agreement with the experimental data was observed. Homogeneous inhibition by means of additives was investigated and more expecially the behaviour of ternary mixtures (two fuels and one oxidizer of the reverse) at the flammability limits. The reciprocal influence of additives on the flammability limits is to be ascribed both to a temperature effect and to a more specific effect on the reaction kinetics; the substitution of more by less reactive chain carriers (free radicals) takes place. (Author)

Descriptors :   (*FLAMES, INHIBITION), FREE RADICALS, FLAMMABILITY, ADDITIVES, POWDERS, CHEMICAL REACTIONS, FIRE EXTINGUISHERS, MATHEMATICAL ANALYSIS, VELOCITY, TEMPERATURE, HYDROCARBONS, AIR, ALKANES, GASES, ALKENES, FLAME PROPAGATION, BIBLIOGRAPHIES, ALUMINUM COMPOUNDS, POTASSIUM COMPOUNDS, OXIDES, SULFATES, COPPER COMPOUNDS, CHROMATES, AMMONIA, HALOGENATED HYDROCARBONS, OXYGEN, NITROGEN COMPOUNDS

Distribution Statement : APPROVED FOR PUBLIC RELEASE